The stainless steel sculpture depicting the feathered biker and its trusty hog was affixed above the entrance of the Concord Inn earlier this month.
Co-owner Warren Bremner said the pub already had a rooster-shaped weather vane on its roof, but he wanted something "a bit different".
He approached Mosgiel-based metal sculptor Brad Jackson about nine months ago and laid out his vision.
"I said, ‘I want an old motorbike, I want a rooster with the old helmet on and the goggles on it and googly eyes’ ... just something a bit funny.
"He came up with the arms and the legs and just started building it and the end result is what we’ve got now."
His concept had been "quite hard to draw", Mr Bremner said.
The motorcycle itself was modelled after his own 1927 Harley-Davidson with the same shape and handlebars.
The helmet resembled that of the Air Force, the rooster also donning boots and gloves.
The overall sculpture was handmade from stainless steel, the metal had been heated up in places to colour the bird’s plumage.
Mr Bremner said he was pleased with the end result and hoped people would take photos with it.
Everyone had been impressed with the sculpture — including at least one real motorcyclist.
"Everyone’s just said, ‘oh, my God, it just looks so good’.
"I don’t think I’ve heard a bad thing yet."
The pub was granted resource consent for an expansion which proposed enclosing its current deck to use for private functions, building a new deck and expanding the kitchen.
Work began last year and was now about three-quarters of the way through, Mr Bremner said.
He estimated costs had risen to at least $800,000, if not more.
The aim was to make the pub look "a bit rusticated" and give patrons something to talk about and look at.
They had still been able to serve patrons — who had remained very loyal — while work was under way.
"Before Christmas it was booming and just the extra space has made it so much more comfortable for people."
He hoped work would be finished within the next few months and the pub could become "a bit of a destination in Dunedin".
There would also be a competition to give a moniker to the unnamed rooster, he said.
